Commit graph android_kernel_sony_sdm845/lib/test_hexdump.c
Message SHA1
test_hexdump: use memcpy instead of strncpy
commit b1286ed7158e9b62787508066283ab0b8850b518 upstream.

New versions of gcc reasonably warn about the odd pattern of

	strncpy(p, q, strlen(q));

which really doesn't make sense: the strncpy() ends up being just a slow
and odd way to write memcpy() in this case.

Apparently there was a patch for this floating around earlier, but it
got lost.

Acked-again-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Linus Torvalds   authored and   Greg Kroah-Hartman   commited 2018-12-08 13:05:04 +01:00
d041ed258e
test_hexdump: print statistics at the end
Like others test are doing print the gathered statistics after test module
is finished.  Return from the module based on the result.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
7aaf4c3e12
test_hexdump: test all possible group sizes for overflow
Currently the only one combination is tested for overflow, i.e.  rowsize =
16, groupsize = 1, len = 1.  Do various test to go through all possible
branches.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
1dacd9ddd3
test_hexdump: check all bytes in real buffer
After processing by hex_dump_to_buffer() check all the parts to be expected.

Part 1. The actual expected hex dump with or without ASCII part.

Part 2. Check if the buffer is dirty beyond needed.

Part 3. Return code should be as expected.

This is done by using comparison of the return code and memcmp() against
the test buffer.  We fill the buffer by FILL_CHAR ('#') characters, so, we
expect to have a tail of the buffer will be left untouched.  The
terminating NUL is also checked by memcmp().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
cc77a719a5
test_hexdump: switch to memcmp()
Better to use memcmp() against entire buffer to check that nothing is
happened to the data in the tail.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
7047d81371
test_hexdump: replace magic numbers by their meaning
The magic numbers of the length are converted to their actual meaning,
such as end of the buffer with and without ASCII part.

We don't touch the rest of the magic constants that will be removed in the
following commits.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
ad27a7559a
test_hexdump: go through all possible lengths of buffer
When test for overflow do iterate the buffer length in a range 0 ..
BUF_SIZE.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
a3d601fcc2
test_hexdump: define FILL_CHAR constant
Define a character to fill the test buffers.  Though the character should
be printable since it's used when errors are reported.  It should neither
be from hex digit [a-fA-F0-9] dictionary nor space.  It is recommended not
to use one which is present in ASCII part of the test data.  Later on we
might switch to unprintable character to make test case more robust.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
3db4a98718
test_hexdump: introduce test_hexdump_prepare_test() helper
The function prepares the expected result in the provided buffer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
87977ca6bc
test_hexdump: rename to test_hexdump
The test suite currently doesn't cover many corner cases when
hex_dump_to_buffer() runs into overflow.  Refactor and amend test suite
to cover most of the cases.

This patch (of 9):

Just to follow the scheme that most of the test modules are using.

There is no fuctional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Andy Shevchenko   authored and   Linus Torvalds   commited 2016-01-20 17:09:18 -08:00
60b2e8f4f7
Renamed from lib/test-hexdump.c (Browse further)